A:AnswerIt all depends on how you are purchasing the phone. If you are buying the phone threw a contract extention or new contract most of the time you are required to activate the phone in order to special pricing or sale price. If you are buying the phone out right with out contract then you could pretty much activate when ever you would like. Keep in mind once you activate the new phone you can just switch out your sim card back into the old phone and store. Hope this helps.
A:AnswerI tried that but I had to get on the payment plan but after it is set up your can pay off the phone and enjoy not being under contract, which should reduce your bill by $20
A:AnswerYou may be able to use an international SIM from Verizon, or you'll need to purchase the international variant of the S6. They utilize different cellular bands / technology.
A:AnswerYes, this and all of today's Smartphones have Wifi built in. Just go to the Settings, look for Wife Settings, and connect to the nearest Wifi, or at your home. You just need the password to connect.
A:AnswerI was going to trade my S5 but I found out I would only get $100 so I gave it to my husband to use. So I am thinking you wouldn't get any more for your S4. More around the ball park of $75 would be my guess.